/* ==========================================================================
   Trck - task tracker UI
   ========================================================================== */
:root{
  --bg:#f6f7fb; --surface:#ffffff; --surface-2:#f2f3f8; --line:#e5e7ef;
  --text:#161824; --muted:#6b7085; --faint:#9aa0b5;
  --accent:#5b5bd6; --accent-soft:#eeeefc;
  --ok:#0f9d6a; --warn:#c2710a; --danger:#dc3350;
  --p1:#dc3350; --p2:#5b5bd6; --p3:#8a90a6;
  --radius:14px; --shadow:0 1px 2px rgba(20,22,40,.05),0 8px 24px rgba(20,22,40,.06);
  --safe-b:env(safe-area-inset-bottom,0px);
}
@media (prefers-color-scheme:dark){
  :root{
    --bg:#0e0f16; --surface:#171923; --surface-2:#1f2130; --line:#2a2d3d;
    --text:#e9eaf2; --muted:#9aa0b5; --faint:#6b7085;
    --accent:#8b8bf0; --accent-soft:#23243a;
    --shadow:0 1px 2px rgba(0,0,0,.4),0 8px 24px rgba(0,0,0,.3);
  }
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg);color:var(--text);
  font:15px/1.5 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Inter,Helvetica,Arial,sans-serif;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
input,select,textarea,button{font:inherit;color:inherit}
h1,h2,h3{margin:0;font-weight:650;letter-spacing:-.015em}
.muted{color:var(--muted)}.center{text-align:center}
.hidden{display:none!important}

/* ---------- shell ---------- */
.app{max-width:820px;margin:0 auto;padding:0 16px calc(96px + var(--safe-b))}
.topbar{
  position:sticky;top:0;z-index:30;background:var(--bg);
  border-bottom:1px solid var(--line);
}
.topbar-in{max-width:820px;margin:0 auto;padding:12px 16px;display:flex;align-items:center;gap:12px}
.brand{display:flex;align-items:center;gap:9px;font-size:19px;font-weight:700;letter-spacing:-.02em}
.brand-dot{width:11px;height:11px;border-radius:4px;background:var(--accent);box-shadow:0 0 0 4px var(--accent-soft)}
.spacer{flex:1}
.avatar{
  width:34px;height:34px;border-radius:50%;background:var(--accent-soft);color:var(--accent);
  display:grid;place-items:center;font-weight:700;font-size:13px;border:1px solid var(--line)
}

/* ---------- hero / greeting ---------- */
.hero{padding:22px 2px 14px}
.hero h2{font-size:24px}
.hero p{margin:4px 0 0;color:var(--muted);font-size:14px}
.progress{margin-top:14px;height:7px;border-radius:99px;background:var(--surface-2);overflow:hidden}
.progress>i{display:block;height:100%;background:linear-gradient(90deg,var(--accent),#22c3a6);border-radius:99px;transition:width .4s cubic-bezier(.4,0,.2,1)}

/* ---------- stats ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin:16px 0 4px}
.stat{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:12px 10px;text-align:center}
.stat b{display:block;font-size:20px;line-height:1.2;letter-spacing:-.02em}
.stat span{font-size:11px;color:var(--muted);text-transform:uppercase;letter-spacing:.06em}
.stat.is-danger b{color:var(--danger)}
.stat.is-ok b{color:var(--ok)}

/* ---------- quick add ---------- */
.quickadd{
  display:flex;gap:8px;margin:18px 0 12px;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius);padding:8px;box-shadow:var(--shadow)
}
.quickadd input[type=text]{flex:1;min-width:0;border:0;background:transparent;padding:10px 8px;outline:none;font-size:15px}
.quickadd input::placeholder{color:var(--faint)}

/* ---------- filter chips ---------- */
.chips{display:flex;gap:8px;overflow-x:auto;padding:4px 0 10px;scrollbar-width:none;-webkit-overflow-scrolling:touch}
.chips::-webkit-scrollbar{display:none}
.chip{
  flex:0 0 auto;padding:7px 14px;border-radius:99px;border:1px solid var(--line);background:var(--surface);
  color:var(--muted);font-size:13px;font-weight:550;cursor:pointer;white-space:nowrap;transition:.15s
}
.chip:hover{border-color:var(--accent)}
.chip.on{background:var(--accent);border-color:var(--accent);color:#fff}
.chip .n{opacity:.65;margin-left:5px;font-variant-numeric:tabular-nums}

/* ---------- task list ---------- */
.group-title{font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--faint);margin:20px 2px 8px}
.list{display:flex;flex-direction:column;gap:8px}
.task{
  display:flex;align-items:flex-start;gap:12px;background:var(--surface);border:1px solid var(--line);
  border-left:3px solid var(--p2);border-radius:var(--radius);padding:13px 14px;box-shadow:var(--shadow);
  transition:transform .12s,opacity .2s
}
.task:active{transform:scale(.995)}
.task[data-priority="1"]{border-left-color:var(--p1)}
.task[data-priority="3"]{border-left-color:var(--p3)}
.task.done{opacity:.55}
.task.done .t-title{text-decoration:line-through;color:var(--muted)}
.check{
  flex:0 0 auto;width:22px;height:22px;margin-top:1px;border-radius:50%;border:2px solid var(--line);
  background:transparent;cursor:pointer;display:grid;place-items:center;transition:.15s;padding:0
}
.check:hover{border-color:var(--accent)}
.check svg{width:12px;height:12px;stroke:#fff;stroke-width:3.2;fill:none;opacity:0;transition:.15s}
.task.done .check{background:var(--ok);border-color:var(--ok)}
.task.done .check svg{opacity:1}
.t-body{flex:1;min-width:0}
.t-title{font-weight:550;word-break:break-word}
.t-notes{font-size:13px;color:var(--muted);margin-top:3px;white-space:pre-wrap;word-break:break-word}
.t-meta{display:flex;flex-wrap:wrap;gap:6px;margin-top:7px}
.tag{font-size:11.5px;font-weight:600;padding:3px 8px;border-radius:7px;background:var(--surface-2);color:var(--muted)}
.tag.overdue{background:rgba(220,51,80,.14);color:var(--danger)}
.tag.today{background:rgba(194,113,10,.16);color:var(--warn)}
.tag.soon{background:var(--accent-soft);color:var(--accent)}
.tag.prio-1{background:rgba(220,51,80,.14);color:var(--p1)}
.tag.dot::before{content:"";display:inline-block;width:7px;height:7px;border-radius:50%;background:currentColor;margin-right:6px;vertical-align:middle}
.t-actions{display:flex;gap:2px;flex:0 0 auto}
.icon-btn{
  width:32px;height:32px;border:0;background:transparent;border-radius:9px;color:var(--faint);
  cursor:pointer;display:grid;place-items:center;transition:.15s
}
.icon-btn:hover{background:var(--surface-2);color:var(--text)}
.icon-btn.del:hover{color:var(--danger)}
.icon-btn svg{width:16px;height:16px;stroke:currentColor;stroke-width:1.9;fill:none;stroke-linecap:round;stroke-linejoin:round}

/* ---------- empty ---------- */
.empty{text-align:center;padding:56px 20px;color:var(--muted)}
.empty .big{font-size:40px;margin-bottom:10px}

/* ---------- buttons / forms ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:7px;padding:10px 16px;border-radius:11px;
  border:1px solid var(--line);background:var(--surface);font-weight:600;font-size:14px;cursor:pointer;transition:.15s
}
.btn:hover{background:var(--surface-2)}
.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff}
.btn.primary:hover{filter:brightness(1.08)}
.btn.block{display:flex;width:100%}
.btn.ghost{background:transparent}
.field{margin-bottom:14px}
.field label{display:block;font-size:12.5px;font-weight:650;color:var(--muted);margin-bottom:6px}
.input,select.input,textarea.input{
  width:100%;padding:11px 12px;border:1px solid var(--line);border-radius:11px;background:var(--surface-2);
  outline:none;transition:.15s
}
.input:focus{border-color:var(--accent);background:var(--surface);box-shadow:0 0 0 3px var(--accent-soft)}
textarea.input{resize:vertical;min-height:84px}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.alert{padding:11px 14px;border-radius:11px;font-size:14px;margin:0 0 14px}
.alert.ok{background:rgba(15,157,106,.12);color:var(--ok)}
.alert.err{background:rgba(220,51,80,.12);color:var(--danger)}

/* ---------- modal ---------- */
.modal{position:fixed;inset:0;z-index:60;display:none;align-items:flex-end;justify-content:center}
.modal.open{display:flex}
.modal-bg{position:absolute;inset:0;background:rgba(10,11,20,.5)}
.modal-card{
  position:relative;width:100%;max-width:520px;background:var(--surface);border:1px solid var(--line);
  border-radius:20px 20px 0 0;padding:20px 20px calc(20px + var(--safe-b));max-height:92vh;overflow:auto;
  animation:up .25s cubic-bezier(.2,.8,.2,1)
}
@keyframes up{from{transform:translateY(24px);opacity:.4}}
.modal-head{display:flex;align-items:center;margin-bottom:16px}
.modal-head h3{font-size:17px}

/* ---------- FAB ---------- */
.fab{
  position:fixed;right:max(16px,calc(50vw - 394px));bottom:calc(20px + var(--safe-b));z-index:40;
  width:56px;height:56px;border-radius:18px;border:0;background:var(--accent);color:#fff;font-size:26px;
  box-shadow:0 8px 24px rgba(91,91,214,.45);cursor:pointer;display:grid;place-items:center;transition:.15s
}
.fab:active{transform:scale(.94)}

/* ---------- auth ---------- */
.auth-wrap{min-height:100dvh;display:grid;place-items:center;padding:24px}
.auth-card{width:100%;max-width:380px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:24px;box-shadow:var(--shadow)}
.auth-card .brand{justify-content:center;margin-bottom:6px}
.auth-card h2{text-align:center;font-size:18px;margin-bottom:18px}
.auth-alt{text-align:center;margin:16px 0 0;font-size:14px;color:var(--muted)}
.auth-alt a{color:var(--accent);font-weight:600}

/* ---------- projects ---------- */
.proj-list{display:flex;flex-direction:column;gap:8px}
.proj{display:flex;align-items:center;gap:12px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:13px 14px}
.swatch{width:14px;height:14px;border-radius:5px;flex:0 0 auto}
.tabs{display:flex;gap:4px;background:var(--surface-2);padding:4px;border-radius:12px;margin:16px 0}
.tabs a{flex:1;text-align:center;padding:8px;border-radius:9px;font-size:13.5px;font-weight:600;color:var(--muted)}
.tabs a.on{background:var(--surface);color:var(--text);box-shadow:var(--shadow)}

@media (max-width:520px){
  .stats{grid-template-columns:repeat(2,1fr)}
  .hero h2{font-size:21px}
  .app{padding-left:12px;padding-right:12px}
}
@media (min-width:640px){
  .modal{align-items:center}
  .modal-card{border-radius:20px;padding-bottom:20px}
}

/* ==========================================================================
   Kanban board
   ========================================================================== */
.board{
  display:grid;grid-template-columns:repeat(3,1fr);gap:12px;align-items:start;
  margin-top:4px;
}
.col{
  background:var(--surface-2);border:1px solid var(--line);border-radius:var(--radius);
  padding:10px;display:flex;flex-direction:column;min-height:180px;transition:background .15s,border-color .15s
}
.col.over{border-color:var(--accent);background:var(--accent-soft)}
.col-head{display:flex;align-items:center;gap:8px;padding:2px 4px 10px}
.col-head h3{font-size:13.5px;font-weight:700;letter-spacing:-.01em}
.col-dot{width:8px;height:8px;border-radius:50%;flex:0 0 auto;background:var(--faint)}
.col-dot.s-todo{background:var(--p3)}
.col-dot.s-doing{background:var(--accent)}
.col-dot.s-done{background:var(--ok)}
.col-n{
  margin-left:auto;font-size:11.5px;font-weight:700;color:var(--muted);background:var(--surface);
  border:1px solid var(--line);border-radius:99px;padding:1px 8px;font-variant-numeric:tabular-nums
}
.col-body{display:flex;flex-direction:column;gap:8px;flex:1;min-height:60px}
.col-empty{
  margin:0;padding:22px 8px;text-align:center;font-size:12.5px;color:var(--faint);
  border:1px dashed var(--line);border-radius:11px
}
.col-add{
  margin-top:8px;padding:9px;border:0;background:transparent;color:var(--muted);border-radius:10px;
  font-size:13px;font-weight:600;cursor:pointer;transition:.15s;text-align:center
}
.col-add:hover{background:var(--surface);color:var(--accent)}

/* ---- kanban card ---- */
.kcard{
  position:relative;display:flex;align-items:flex-start;gap:8px;background:var(--surface);
  border:1px solid var(--line);border-left:3px solid var(--p2);border-radius:11px;padding:10px 8px 10px 10px;
  box-shadow:var(--shadow);cursor:grab;touch-action:pan-y;user-select:none;-webkit-user-select:none
}
.kcard:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.kcard[data-priority="1"]{border-left-color:var(--p1)}
.kcard[data-priority="3"]{border-left-color:var(--p3)}
.kcard.done .kcard-title{text-decoration:line-through;color:var(--muted)}
.kcard.done{opacity:.6}
.kcard-grip{display:flex;flex-direction:column;gap:3px;padding-top:5px;flex:0 0 auto;opacity:.35}
.kcard-grip span{display:block;width:12px;height:2px;border-radius:2px;background:currentColor}
.kcard-body{flex:1;min-width:0}
.kcard-title{font-size:13.5px;font-weight:550;line-height:1.35;word-break:break-word}
.kcard .t-meta{margin-top:6px;gap:4px}
.kcard .tag{font-size:10.5px;padding:2px 6px}
.kcard-edit{width:26px;height:26px;flex:0 0 auto}
.kcard-edit svg{width:13px;height:13px}

/* ---- drag visuals ---- */
.kcard.dragging{opacity:.35}
.kcard.ghost{
  position:fixed;top:0;left:0;z-index:200;pointer-events:none;margin:0;cursor:grabbing;
  box-shadow:0 12px 32px rgba(20,22,40,.28);opacity:.97;will-change:transform
}
.kplaceholder{
  border:2px dashed var(--accent);border-radius:11px;background:var(--accent-soft);
  opacity:.7;flex:0 0 auto
}
body.is-dragging{cursor:grabbing;overflow:hidden}
body.is-dragging *{cursor:grabbing!important}

/* ---- mobile: swipeable snap columns ---- */
@media (max-width:700px){
  .board{
    display:flex;grid-template-columns:none;overflow-x:auto;scroll-snap-type:x mandatory;
    gap:10px;padding-bottom:8px;margin-left:-12px;margin-right:-12px;padding-left:12px;padding-right:12px;
    scrollbar-width:none;-webkit-overflow-scrolling:touch
  }
  .board::-webkit-scrollbar{display:none}
  .col{flex:0 0 84%;scroll-snap-align:center}
}